53751720 has 128 divisors (see below), whose sum is σ = 180195840. Its totient is φ = 12714240.

The previous prime is 53751661. The next prime is 53751743. The reversal of 53751720 is 2715735.

53751720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56287 + ... + 57233.

It is an arithmetic number, because the mean of its divisors is an integer number (1407780).

Almost surely, 2^53751720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53751720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90097920).

53751720 is an abundant number, since it is smaller than the sum of its proper divisors (126444120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53751720 is a wasteful number, since it uses less digits than its factorization.

53751720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 53751720 is about 7331.5564513956. The cubic root of 53751720 is about 377.3961411873.

The spelling of 53751720 in words is "fifty-three million, seven hundred fifty-one thousand, seven hundred twenty".